CVE-2017-7541

kernel: Possible heap buffer overflow in brcmf_cfg80211_mgmt_tx()

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The brcmf_cfg80211_mgmt_tx function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux kernel before 4.12.3 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted NL80211_CMD_FRAME Netlink packet.

La función brcmf_cfg80211_mgmt_tx en el archivo drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c en el kernel de Linux anterior a la versión 4.12.3, permite a los usuarios locales causar una denegación de servicio (desbordamiento de búfer y bloqueo del sistema) o posiblemente alcanzar privilegios por medio de un paquete de Netlink NL80211_CMD_FRAME creado.

Kernel memory corruption due to a buffer overflow was found in brcmf_cfg80211_mgmt_tx() function in Linux kernels from v3.9-rc1 to v4.13-rc1. The vulnerability can be triggered by sending a crafted NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be triggered remotely as certain userspace code is needed for this. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-04-05 CVE Reserved
2017-07-25 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (17)

URL	Tag	Source
http://www.securityfocus.com/bid/99955	Third Party Advisory
http://www.securitytracker.com/id/1038981	Third Party Advisory
https://source.android.com/security/bulletin/2017-11-01	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f44c9a41386729fea410e688959ddaa9d51be7c	2023-02-14
http://openwall.com/lists/oss-security/2017/07/24/2	2023-02-14
https://bugzilla.novell.com/show_bug.cgi?id=1049645	2023-02-14
https://bugzilla.redhat.com/show_bug.cgi?id=1473198	2017-10-19
https://github.com/torvalds/linux/commit/8f44c9a41386729fea410e688959ddaa9d51be7c	2023-02-14
https://www.spinics.net/lists/stable/msg180994.html	2023-02-14

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3927	2023-02-14
http://www.debian.org/security/2017/dsa-3945	2023-02-14
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.3	2023-02-14
https://access.redhat.com/errata/RHSA-2017:2863	2023-02-14
https://access.redhat.com/errata/RHSA-2017:2918	2023-02-14
https://access.redhat.com/errata/RHSA-2017:2930	2023-02-14
https://access.redhat.com/errata/RHSA-2017:2931	2023-02-14
https://access.redhat.com/security/cve/CVE-2017-7541	2017-10-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.9 < 3.10.108 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.9 < 3.10.108"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.11 < 3.16.48 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.11 < 3.16.48"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.17 < 3.18.62 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.17 < 3.18.62"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.19 < 4.1.43 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.19 < 4.1.43"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 4.4.78 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.4.78"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.39 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.39"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.11.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.11.12"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.12 < 4.12.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.12.3"		-		Affected